Mitsubishi FREQROL-SF Troubleshooting Manual page 26

Alarm
Abbr.
No.
10 UNDER VOLTAGE
12 ME1 MEMORY ERROR 1
EXTERNAL CLOCK
13
ERROR
ME2
15 MEMORY ERROR 2
BE
17
20 IC MAC007 ERROR
NO SIGNAL 2
21
( E ENS)
SPINDL
22
NSS IC MAC012 ERROR
SPEED CONTROL ERROR
23 OSE
EXCESS
24 BRT
CONVERTER OVER-
25
CURRENT
PL
26 POWER PHASE LACK
CPU ERROR
27 CPUE
(DIVISION ERROR)
OVERSPEED
31
32 oc INVERTER
OVER VOLTAGE
33 ov
Name
The input power voltage drops to a value less
than the specification assured value or an
instantaneous power failure occurs for 15 ms or
more.
The internal memory for controlling the control-
ler is not correclty read and written.
(It is checked when the power of the controller
is turned on.)
The system clock which is sent from the NC is
defective.
The 2-port memory for communication which is
used for linkage with the M300 series CNC through
the bus does not correctly work.
Any part on the controlling printed circuit
board does not correctly work.
The part ICMACOO7 on the controlling printed cir-
A signal is not input from the orientation en-
coder or the signal is not in the
The part IC MAC012 on the controlling printed
circuit board does not correctly works.
The difference between the referenced speed and
motor speed is 50 rpm or more and it takes for
12 set or more.
current which exceeds the specific value flows
in the main circuit.
An overcurrent which exceeds the specifc value
flows in the converter.
One or more of 3 phases is missed in 3-phase
power.
A division error occurs in CPU operation be-
cause of incorrect parameters being set.
The motor speed exceeds 115% of the maximum speed
An overcurrent which exceeds the specific value
OVERCURRENT
flows in the controller.
The voltage of the main circuit condenser exceeds
the specific value because of regenerative energy
in motor deceleration state.
1
1.3 Checking method and
Description
Continued on the next page.
21 -
Troubleshooting
remedy of trouble
classification B
Motion
(Note)
A
A
A
A
A
A
A
correct level.
A
A
A
A
A
A
A
A
A